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Kajanor had the same error when loading the save, but that was singleplayer and only happened with the steam version: viewtopic.php?f=35&t=27992
I don't know what causes it, I suspect old migration files but I have no idea why the game would try to run them.
What files do you have in Factorio\data\base\migrations (the install location, not the mods/saves one)? There should be no files older than Factorio_0.11 in it.